Optimistic/John,
Yes. Ambulances are held to a higher safety standard. This incudes type I , II, III, and medium duty (truck cap chassis, wheelchair vans, speciality vans, and heavier load trucks). It needs to protect not only a patient, a driver, a crew that is actively working and moving around in the unit, but 3-4 small tanks of oxygen and one large 4.5 foot tank of oxygen that is sitting right behind the driver. The rollover protection systems are tested on frontal, side, and rollover by sensors for air bags, 3 point seat belts, etc. by the National Highway and Safety Administration. The patient stretcher, which is the safest spot, is locked in place. The second safest spot is the captain's chair by the patient's airway. The roof, for example, can take AS MUCH weight as the chassis! It is designed to totally roll without caving in!!!